HP 48G Linear Regression Best Fit Line

[Rodger Rosenbaum]

Because these data are being used with an orthogonal fit, the slope if you exchange X and Y is just reciprocated; you can type in the Eastings as X and the Northings as Y, and remove the NEG from the end of OFIT and it all works OK. :-)

It's easier than I thought it would be; I just hadn't thought it through. :-)

After typing in everything like that, to check that you typed it all in correctly, execute ORTH; you should get:

[[ 120.175378956 ]
[ -61192171.745 ]]

Now type OFIT (after having removed the NEG at the end) and see:

[[ .24655 ]
[ .24033 ]
[ -.78341 ]
[ .06476 ]
[ .23177 ]
[ -.00045 ]
[ -.00023 ]]